Computerized weft knitting machine and forced tuck control method, system, device and medium

Abstract

The application discloses a computerized flat knitting machine and a forced loop lifting control method, system, device and medium thereof. The method comprises the following steps: obtaining a pattern design file in a current knitting process, and identifying the pattern design file to obtain a knitting identification result of a current knitted fabric; determining whether the knitting identification result meets a forced loop lifting triggering condition, and generating a forced loop lifting triggering signal when the forced loop lifting triggering condition is met; and in response to the forced loop lifting triggering signal, controlling an idle cam assembly to act and performing secondary loop lifting on a loop, so that the loop completes forced loop lifting in a non-loop pulling-off state. The application can realize precise automatic control of the forced loop lifting action without additional equipment, and can realize forced loop lifting in a non-loop pulling-off state without reducing the operation efficiency of the equipment, effectively solve the problem of the end-of-head needle fault in the knitting process of special fabrics, reduce fabric quality defects, reduce the cost of manual intervention and downtime maintenance time, and improve the production efficiency and the yield.

Description

Technical Field

[0001] This invention relates to the field of automatic knitting control technology, specifically to a computerized flat knitting machine and its forced loop-off control method, system, device, and medium. Background Technology

[0002] Computerized flat knitting machines are core equipment in the knitting industry for producing various fabrics. Their knitting quality directly determines the final fabric yield and market competitiveness. During the knitting process, the needles on a computerized flat knitting machine need to sequentially complete steps such as loop removal, yarn padding, loop closing, loop joining, loop release, and loop formation to form continuous loops. Among these, loop release is the crucial step of slipping the old loop from the needle tip onto the new yarn; the quality of loop release directly affects the fabric's forming quality and production continuity.

[0003] In existing technology, loop release on computerized flat knitting machines mainly relies on the natural weight and tension of the loops themselves, lacking a dedicated forced loop release control mechanism. When knitting ordinary weaves, this natural loop release method can generally meet production requirements. However, for special fabrics such as plain weaves and double-sided tight weaves, due to the tightness of the loops and the high yarn tension, the friction between the old loops and the knitting needles increases significantly, and the natural loop release method cannot guarantee that the loops will effectively and stably detach from the knitting needles.

[0004] The aforementioned technical defects can lead to frequent needle tip malfunctions, where the loop fails to detach completely from the needle and instead remains wrapped around the needle tip. This can cause a series of problems in subsequent knitting processes: minor issues include missed needles, holes, and disordered patterns in the fabric, severely affecting its appearance and physical properties and making the finished product fail to meet delivery requirements; major issues can cause the needle to bend or break, or even damage core components such as the cam system, increasing equipment maintenance costs and downtime, and significantly reducing production efficiency.

[0005] To address the problem of buttonhole malfunctions, existing technologies either employ manual intervention, requiring operators to monitor equipment operation in real time and manually stop the machine upon detecting a malfunction. This approach is not only labor-intensive and costly, but also fails to prevent malfunctions, only addressing them after they occur, resulting in fabric waste and production interruptions. Alternatively, they sacrifice fabric density or slow down the machine head, which similarly impacts equipment capacity and product quality. Furthermore, some technologies attempt to achieve forced buttonhole removal by adding an additional buttonhole release mechanism. However, this solution requires large-scale modifications to existing equipment, increasing manufacturing costs and complexity. The operation of the additional mechanism also consumes machine operating time, reducing overall equipment efficiency and hindering large-scale application in industrial production.

[0006] Therefore, the industry urgently needs a computer-controlled forced loop-off system for flat knitting machines that does not require additional mechanisms, does not reduce equipment operating efficiency, and can automatically predict and actively intervene, in order to fundamentally solve the problem of head needle failure during the knitting process of flat and double-sided tight weaves. Summary of the Invention

[0007] In view of this, the present invention provides a computerized flat knitting machine and its forced loop-out control method, system, device and medium to solve the problem of loop-out difficulty in the weaving of four-sided and double-sided tight weaves in existing computerized flat knitting machines, which easily leads to the failure of the head-binding needle.

[0008] This invention provides a method for controlling forced loop separation on a computerized flat knitting machine, the method comprising: Obtain the pattern design file of the computerized flat loom during the current weaving process, and identify the pattern design file to obtain the weaving identification result of the current woven fabric; Determine whether the knitting recognition result meets the forced loop-out trigger condition, and generate a forced loop-out trigger signal when the knitting recognition result meets the forced loop-out trigger condition; In response to the forced unwinding trigger signal, the idle triangular component in the computer braiding machine is controlled to operate, and the coil on the computer braiding machine is subjected to secondary pressure unwinding, so that the coil is forced unwinding without unwinding.

[0009] Optionally, the vacant triangle assembly includes at least a left-pin triangle, a right-pin triangle, a flip-pin triangle, and a hanging triangle.

[0010] Optionally, the weaving identification result includes the weaving process of the current woven fabric in each weaving row and the weaving direction corresponding to the weaving process; wherein, the weaving direction includes left-hand weaving and right-hand weaving; When the knitting direction is specifically left-hand knitting, in response to the forced loop release trigger signal, the idle cam assembly in the computerized knitting machine is controlled to perform a secondary compression loop release on the coils on the computerized knitting machine, so that the coils complete the forced loop release without unwinding, including: Control the left needle triangle to enter the working position to perform the pre-pressing needle action; Control the right connector triangle to exit the working position; The control triangle is brought into the working position to provide motion guidance only for the needles of the computerized knitting machine; Control the lifting triangle to exit the working position.

[0011] Optionally, the weaving identification result includes the weaving process and the weaving direction corresponding to the weaving process; wherein, the weaving direction includes left-hand weaving and right-hand weaving; When the knitting direction is specifically right-hand knitting, in response to the forced unwinding trigger signal, the idle cam assembly in the computerized knitting machine is controlled to perform a secondary compression unwinding of the coils on the computerized knitting machine, so that the coils complete forced unwinding without unwinding, including: Control the left connector triangle to exit the working position; Control the right pin triangle to enter the working position to perform the pre-pressing action; The control triangle is brought into the working position to provide motion guidance only for the needles of the computerized knitting machine; Control the lifting triangle to exit the working position.

[0012] Optionally, before controlling the movement of the idle triangle component in the computerized knitting machine, the method further includes: In response to the forced loop release trigger signal, a left needle connection triangle control command, a right needle connection triangle control command, a needle flipping triangle control command, and a needle lifting triangle control command are generated respectively.

[0013] Optionally, determining whether the knitting recognition result meets the forced loop-off trigger condition includes: When the weaving identification result indicates that the current woven fabric belongs to the target structure type and is in the target process, it is determined that the weaving identification result meets the forced loop-out triggering condition; otherwise, it is determined that the weaving identification result does not meet the forced loop-out triggering condition.

[0014] Optionally, the target weave type is specifically a four-sided weave and / or a double-sided tight weave; the target process is specifically a coiling process.

[0015] Optionally, the weaving identification result includes the fabric structure type and weaving process of the current woven fabric in each weaving row; The pattern design file is identified to obtain the weaving identification result of the current woven fabric, including: The pattern design file is read and parsed to obtain the instruction sequence for each weaving row of the current woven fabric; Select the instruction sequence under any knitting row, and extract the organization feature vector of the corresponding knitting row based on the selected instruction sequence; The structure feature vector of the selected knitting row is matched with the preset structure type template library to obtain the corresponding fabric structure type. Based on the instruction sequence of the selected weaving row, the corresponding triangular action timing combination is obtained through parsing. The triangular motion sequence combination of the selected weaving row is identified to generate the corresponding weaving process; Traverse the instruction sequence of each weaving row of the current woven fabric, and obtain the fabric structure type and weaving process for each weaving row in the same way.

[0016] Furthermore, the present invention also provides a computerized horizontal loom forced loop-out control system, applied in the aforementioned computerized horizontal loom forced loop-out control method, the system comprising: The weaving recognition module is used to acquire the pattern design file of the computer flat loom during the current weaving process, and to recognize the pattern design file to obtain the weaving recognition result of the current woven fabric. The loop-off trigger module is used to determine whether the knitting recognition result meets the forced loop-off trigger condition, and generate a forced loop-off trigger signal when the knitting recognition result meets the forced loop-off trigger condition; The unwinding control module is used to respond to the forced unwinding trigger signal, control the action of the idle triangle component in the computer braiding machine, and perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

[0017] In addition, the present invention also provides a computerized flat knitting machine, comprising: Machine body; The main controller, located on the machine body, is used to acquire the pattern design file of the computer flat loom during the current weaving process, and to identify the pattern design file to obtain the weaving identification result of the current woven fabric; to determine whether the weaving identification result meets the forced loop-out trigger condition, and to generate a forced loop-out trigger signal when the weaving identification result meets the forced loop-out trigger condition; An empty triangular assembly is mounted on the machine body and electrically connected to the main controller. It is used to respond to the forced unwinding trigger signal and operate under the control of the main controller to perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

[0018] In addition, the present invention also provides a computerized horizontal loom forced loop-out control device, including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed, it implements the method steps in the aforementioned computerized horizontal loom forced loop-out control method.

[0019] In addition, the present invention also provides a computer storage medium comprising: at least one instruction that, when executed by a computer, implements the method steps of the aforementioned computer-controlled forced loop-off control method for horizontal looms.

[0020] The beneficial effects of this invention are as follows: By acquiring the pattern design file of the computer-controlled flat loom during the current weaving process, it can provide a basis for subsequent identification and loop removal judgment, and predict in advance whether there is a risk of loop removal difficulties in the current weaving process; by matching the forced loop removal trigger conditions, it can accurately identify the scenario that requires forced loop removal, and trigger loop removal control only when the conditions are met, without affecting the normal operation of the regular weaving process; by controlling the action of the existing idle triangular components of the equipment to complete the secondary pressure loop removal, there is no need to add a special loop removal mechanism, no need to carry out large-scale modification of the existing equipment, no additional equipment manufacturing costs and structural complexity, and no additional equipment running time. It can achieve forced loop removal in a non-loop removal state without reducing equipment operating efficiency, effectively solving the problem of head needle failure in the weaving process of special fabrics such as flat four-sided weave and double-sided tight weave, reducing fabric quality defects, reducing equipment damage risk, reducing manual intervention costs and downtime maintenance time, and improving production efficiency and yield. Attached Figure Description

[0021] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings: Figure 1 A flowchart of a computer-controlled horizontal knitting machine forced loop-out control method according to Embodiment 1 of the present invention is shown; Figure 2 This diagram illustrates the structure of a computer-controlled forced loop-out control system for a horizontal knitting machine according to Embodiment 2 of the present invention. Figure 3 A structural diagram of a computerized horizontal weaving machine according to Embodiment 3 of the present invention is shown. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In this embodiment of the invention, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] In this embodiment of the invention, the term "multiple" refers to two or more, and other quantifiers are similar.

[0026] Example 1 This embodiment provides a method for controlling forced loop separation on a computerized horizontal knitting machine, such as... Figure 1 As shown, the method includes: S1: Obtain the pattern design file of the computerized flat loom during the current weaving process, and identify the pattern design file to obtain the weaving identification result of the current woven fabric; S2: Determine whether the knitting recognition result meets the forced loop-off triggering condition, and generate a forced loop-off triggering signal when the knitting recognition result meets the forced loop-off triggering condition; S3: In response to the forced unwinding trigger signal, control the idle triangular component in the computer braiding machine to perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

[0027] In this embodiment, by acquiring the pattern design file of the computer-controlled flat loom during the current weaving process, a basis can be provided for subsequent identification and loop removal judgment, and the risk of loop removal difficulties in the current weaving process can be predicted in advance. By matching the forced loop removal trigger conditions, the scenario requiring forced loop removal can be accurately identified, and loop removal control is triggered only when the conditions are met, without affecting the normal operation of the regular weaving process. By controlling the action of the existing idle triangular components of the equipment to complete the secondary pressure loop removal, there is no need to add a special loop removal mechanism, no need to carry out large-scale modification of the existing equipment, no additional equipment manufacturing costs or structural complexity, and no additional equipment running time. Forced loop removal can be achieved without reducing equipment operating efficiency, effectively solving the problem of head needle failure in the weaving process of special fabrics such as flat weave and double-sided tight weave, reducing fabric quality defects, reducing equipment damage risk, reducing manual intervention costs and downtime maintenance time, and improving production efficiency and yield.

[0028] Computerized flat knitting machines typically include needles, cam assemblies, a knitting head, roller tensioning mechanism, a main control unit, and a frame. Cam assemblies include turn-over cams, join-up cams, loop-setting cams, loop-forming cams, and press-down cams. In the existing cam track design of computerized flat knitting machines, the movement range of each functional cam is pre-defined. During regular knitting operations, some cams remain idle and do not participate in the current knitting action. Loop slippage usually occurs during the loop-forming process. After the needle moves along the cam track to lay the yarn and close the loop, the old loop slips off the needle tip due to its own tension and gravity, and is inserted into the newly formed loop, completing the loop-forming process. In the unwinding process, the functional triangles involved in the knitting work include the loop-forming triangle and the loop-forming triangle. Other triangles, such as the turn-back triangle, the needle-attaching triangle, and the loop-lifting triangle, are in an idle and non-working state. This embodiment utilizes these idle triangles that have already been configured on the original equipment. By adjusting their working positions, an additional secondary press-back loop-unwinding action can be achieved, completing the forced loop-unwinding without changing the original knitting process or increasing the extra running time.

[0029] The following is a detailed description of each step of the forced loop-off control method for computerized horizontal knitting machines in this embodiment.

[0030] In step S1 of this embodiment, the pattern design file typically includes information such as the action instructions, pattern parameters, and weave type for all knitting rows of the currently woven fabric. This file can be obtained by retrieving the design data package stored in the computer-controlled loom main control unit, or by importing it from a host computer.

[0031] In step S1 of this embodiment, the weaving identification result includes the fabric structure type and weaving process of the current woven fabric in each weaving row.

[0032] In S1, the pattern design file is identified to obtain the weaving identification result of the current woven fabric, including: S11: Read and parse the pattern design file to obtain the instruction sequence for each weaving row of the current woven fabric; S12: Select the instruction sequence under any knitting row, and extract the organization feature vector of the corresponding knitting row based on the selected instruction sequence; S13: Match the structure feature vector of the selected weaving row with the preset structure type template library to obtain the corresponding fabric structure type; S14: Based on the instruction sequence of the selected weaving row, parse out the corresponding triangular action timing combination; S15: Identify the triangular motion sequence combination of the selected weaving row and generate the corresponding weaving process; S16: Traverse the instruction sequence of the current woven fabric under each woven row, and obtain the fabric structure type and woven process under each woven row in the same way.

[0033] In the process of identifying fabric structure type and weaving process based on pattern design file, the instruction sequence of all weaving rows is first obtained by reading and parsing the pattern design file. Then, the instruction information of each weaving row is extracted and matched one by one using the preset structure type template library. There is no need to collect additional running data through sensors during the weaving process. The identification process is efficient and can be accurately completed by relying on preset template matching. It does not add extra computational burden to the weaving process.

[0034] Specifically, in step S11, file reading and recognition can be completed using existing pattern file parsing algorithms, which can automatically extract the action parameters and runtime sequence information of each triangle in each row of weaving process without the need for additional parsing process development, and are compatible with the pattern file formats of most existing computerized flat knitting machines.

[0035] The instruction sequence obtained by parsing in step S11 may contain the following key fields: Row number identifier refers to the sequence number of the current knitting row in the overall pattern, such as Row 156; The direction of the knitting head refers to the direction of the current knitting row, such as L (indicating left-hand knitting) / R (indicating right-hand knitting). The needle selection instruction sequence refers to the needle selection status control code for each needle position, such as needle 1: loop formation, needle 2: loop formation; needle 3: eyelet formation, etc. Triangle action commands refer to the entry and exit states and action types of each functional triangle, such as front bed triangle 1: in a circle, front bed triangle 2: idle, etc. The yarn feeder assignment instruction specifies the color yarn and yarn feeder number for the current knitting row, for example, yarn feeder 3: color code A; The stitch density parameter refers to the set value of the current knitting row's loop density, for example, stitch density values: front bed 85, back bed 90.

[0036] In step S12, for any knitting row, data related to fabric structure determination is extracted from its instruction sequence to form a corresponding structure feature vector, which includes at least the following dimensions: Distribution of looping motions: Statistical analysis of the number of needles selected and the distribution pattern of looping motions performed on the front and rear needle beds; Distribution of tucking / hanging eye movements: Statistics on the number and distribution pattern of needles selected for tucking (hanging eye) movements; Floating line action distribution: Count the number of needles that neither perform loop formation nor loop gathering; Coil density setting for the current row.

[0037] In step S13, the tissue feature vector is matched against a preset tissue type template library. This template library defines feature discrimination rules for various fabric tissues, for example: Siping weave identification rules: The distribution pattern of needle selection in the front and rear needle beds shows the characteristics of full needle exit or regular needle exit, and there is no tucking action or floating thread action, and the measurement parameters are within the normal range.

[0038] Double-sided tightness tissue discrimination rules: There is a looping action in both the front and back needle beds, and the tightness parameter exceeds the preset tightness threshold (i.e., the loop density value is higher than the normal setting, such as the tightness value being lower than a certain critical value).

[0039] Single-sided tissue discrimination rule: only the anterior needle bed or only the posterior needle bed has a circular motion.

[0040] The rule for identifying the shifting pattern is: the instruction sequence contains the activation instruction of the flipping (shifting) triangle.

[0041] After a successful match, the system assigns the corresponding fabric structure type label to the knitting row (such as "flat weave", "double-sided tight weave", "single-sided plain weave", etc.).

[0042] In step S14, based on the instruction sequence of the selected weaving row, the entry and exit action time nodes and activation status of all functional triangles are extracted. The action sequence of all triangles is sorted out according to the direction of the machine head, and the corresponding triangle action timing combination is obtained. This timing combination clarifies the working period and working status of each functional triangle during the weaving process of the current weaving row, and distinguishes the functional triangles that are currently in the active working state and the idle triangles that are in the idle standby state.

[0043] In step S15, based on the activation state of each functional triangle in the triangular action sequence combination, the specific knitting process corresponding to the current knitting row can be identified, such as full knitting, turning stitches and shifting stitches, attaching stitches and hanging stitches, etc., to determine whether the current process includes the step of leaving the loop.

[0044] In step S16, each knitting row is processed one by one according to the above identification and matching process, so as to obtain the fabric structure type and knitting process information corresponding to all knitting rows, and complete the generation of knitting identification results.

[0045] In step S2 of this embodiment, determining whether the knitting recognition result meets the forced loop-off trigger condition includes: When the weaving identification result indicates that the current woven fabric belongs to the target structure type and is in the target process, it is determined that the weaving identification result meets the forced loop-out triggering condition; otherwise, it is determined that the weaving identification result does not meet the forced loop-out triggering condition.

[0046] By determining both the target fabric type and the target process, we can accurately identify knitting scenarios that genuinely pose a risk of difficulty in unwinding, thus avoiding the accidental triggering of forced unwinding actions that could affect normal knitting. This ensures the unwinding effect without interfering with the operation of regular knitting processes.

[0047] The target weave type refers to the weave type that is prone to loop breakage (such as flat weave or double-sided tight weave), while the target process refers to the weaving process that includes loop breakage in the weave type (such as the loop forming process). Only when the current weave row meets the requirements of both the target weave type and the target process will the subsequent forced loop breakage control be triggered, further improving the accuracy of the judgment.

[0048] Furthermore, the target fabric type is specifically a four-sided flat fabric and / or a double-sided tight fabric; the target process is specifically a coiling process.

[0049] By identifying the target organizational types and target processes mentioned above, common unwinding scenarios can be accurately identified, adapting to the unwinding needs of most special fabric weaving in the industry, without needing to expand the identification range, thus improving computational efficiency.

[0050] In step S2 of this embodiment, after generating the forced loop-off trigger signal, the signal is synchronously transmitted to the main control unit of the computer flat loom. The main control unit coordinates and controls the timing of the action of the vacant triangle to ensure that it is compatible with the original timing of the action of the current weaving process and will not disrupt the original weaving rhythm.

[0051] The forced disengagement trigger signal can include the vacant triangles participating in the response, the timing parameters of the actions of these vacant triangles, and the target pin position information of the response. This ensures that the main control unit can directly call the corresponding control command to complete the triangle action adjustment without secondary calculations, thus improving control response efficiency.

[0052] In this embodiment, the empty triangle assembly includes at least a left-pin triangle, a right-pin triangle, a flip-pin triangle, and a hanging triangle.

[0053] When the forced decoupling trigger condition is met, the above-mentioned idle triangle component (i.e., the functional triangle in the idle state) is used as the responding triangle. It can make full use of the original hardware structure of the equipment to achieve forced decoupling without the need for additional frame modification and new actuators. It maximizes the use of existing equipment hardware resources, controls costs, and has low modification difficulty. Ordinary production workshops can complete the adaptation and upgrade of existing equipment.

[0054] Both the left and right pin-connecting triangles mentioned above belong to the pin-connecting triangle category.

[0055] In step S2 of this embodiment, after generating the forced decoupling trigger signal, the method further includes: In response to the forced loop release trigger signal, a left needle connection triangle control command, a right needle connection triangle control command, a needle flipping triangle control command, and a needle lifting triangle control command are generated respectively.

[0056] By generating the aforementioned control commands, each idle triangle can enter the working track according to a preset timing sequence. After the original loop formation and unraveling action is completed, the old coil that has not completely slipped off the needle head is pressed down a second time to push the old coil out of the needle head smoothly. This will not change the original action sequence of each functional triangle, nor will it occupy the knitting stroke. It can complete the forced loop unraveling action synchronously in the original running process of the current knitting row, ensuring that the knitting rhythm is not affected.

[0057] In this embodiment, since the knitting identification result obtained from the aforementioned steps includes the knitting process, which typically includes the corresponding triangular action sequence and knitting direction, the empty triangular position can be flexibly selected to enter the working position to complete the loop-breaking action based on the current knitting head running direction. The knitting direction includes left-hand knitting and right-hand knitting. When the knitting head is knitting in the left-hand direction, the empty triangular position at the front of the knitting head in the current running direction is selected to enter the working track in advance; when the knitting head is knitting in the right-hand direction, the empty triangular position at the front of the right-hand direction is adjusted to enter the working track, ensuring that the triangular position can accurately complete the secondary pressing action when the needle passes by, adapting to the loop-breaking requirements of different knitting directions, not missing the needle pressing opportunity, and ensuring the accuracy of the forced loop-breaking action.

[0058] Specifically, when the weaving direction is left-hand weaving, step S3 includes: S3A1: Control the left needle triangle to enter the working position to perform the pre-pressing needle action; S3A2: Controls the right connector triangle to exit the working position; S3A3: Controls the needle flipping triangle to enter the working position, providing only motion guidance for the needles of the computer knitting machine; S3A4: Control the lifting triangle to exit the working position.

[0059] For left-hand knitting, during the control of the empty cam assembly, the working position of each empty cam is adjusted in the above manner. This allows the left needle receiving cam to complete the pre-pressing in advance during the needle's movement, and with the guiding effect of the turn-over cam, ensures that the needle moves along the preset track to complete the secondary press-out loop. At the same time, it prevents the cams in non-working positions from interfering with the normal operation of the needle. The action logic is clear, adapts to the running path of left-hand knitting, and ensures that the loop-out action is accurate and in place.

[0060] It should be understood that in step S3A1, the left needle receiving triangle enters the working position and is in the "retracted" state (i.e., the triangle protrudes from the needle bed plane and is in a mechanical position that can contact and drive the needle heel of the knitting needle). By performing the pressing action in advance, the needle heel of the knitting needle (the needle heel is the protruding part on the knitting needle used to engage with the triangle component) can be restricted within the preset triangle working track, ensuring the stability of the knitting needle movement trajectory. This allows the old loop on the needle hook to be subjected to downward pressure in advance during the knitting needle's ascent, preventing the old loop from following the needle head too far upward and preparing for the subsequent secondary pressing and loop removal. In step S3A3, the needle flipping triangle enters the working position and is also in the "retracted" state, but it only provides motion guidance and does not perform its original work (referring to the needle flipping action). It does not change the original rising and falling trajectory of the knitting needle. Combined with the pre-pressing action of the left needle receiving triangle, the loop removal action can be completed stably without adjusting the operating parameters of the original functional triangle. The control logic is simple and reliable. For steps S3A2 and S3A4, the right needle receiving triangle exits its working position and is in the "down" state (i.e., the triangle retracts below the needle bed plane, completely avoiding the needle heel and without any mechanical interference), and will not obstruct or interfere with the left-hand knitting needles. The hanging triangle remains in its exited working position and is also in the "down" state, and will not have any additional impact on the movement of the knitting needles. The entire action process only adjusts the position of the originally empty triangles, and does not interfere with the normal movement of the original loop-forming triangles and loop-forming triangles, ensuring that the original knitting process is not affected.

[0061] Specifically, when the weaving direction is right-hand weaving, step S3 includes: S3B1: Control the right pin triangle to enter the working position to perform the pre-pressing action; S3B2: Controls the left connector triangle to exit the working position; S3B3: Controls the needle flipping triangle to enter the working position, providing only motion guidance for the needles of the computer knitting machine; S3B4: Control the lifting triangle to exit the working position.

[0062] Similar to the control strategy for left-hand knitting, for right-hand knitting, the working positions of the left and right needle receiving triangles are adjusted to adapt to the direction of the machine head. This ensures that the needle receiving triangles can be in place before the needles enter the loop-off stage to complete the pre-pressing. With the guidance of the turn-over triangle, the secondary press-off loop-off action can also be completed stably. This complements the control logic of left-hand knitting, covering the forced loop-off requirements of all knitting directions. The control logic is unified and highly adaptable.

[0063] In step S3B1, the same principle applies as step S3A1. The right needle receiving triangle enters the working position and is in the "retracted" state. By performing the pressing action in advance, the needle heel of the knitting needle is restricted within the preset triangle working track, ensuring the stability of the knitting needle movement trajectory. This allows the old loop on the needle hook to be subjected to downward pressure in advance during the needle's ascent, preventing the old loop from following the needle head excessively upward and preparing for the subsequent secondary pressing and loop removal. In step S3B3, the flipping triangle enters the working position only to guide the movement and does not perform the original flipping action. It does not change the original upward and downward trajectory of the knitting needle. Combined with the pre-pressing action of the right needle receiving triangle, the loop removal can be stably completed without adjusting the operating parameters of the original functional triangle. The control logic is simple and reliable. In steps S3B2 and S3B4, the left needle receiving triangle and the hanging eye triangle are both in the "down" state, retracted below the needle bed plane to avoid the needle heel, and do not obstruct or interfere with the right-moving needle. The entire action process only adjusts the position of the originally empty triangle, and does not interfere with the normal action of the original eye triangle and loop triangle that participate in the loop formation, ensuring that the original knitting rhythm and knitting quality are not affected.

[0064] It should be understood that the secondary pressure release of the coil refers to the process where, after the original looping cam completes the first release action, the inserted empty cam applies a second pressure to the needle, pushing the old coil that has not completely detached from the needle tip to completely release it. The entire process is completed within a single knitting stroke of the current knitting row, without requiring additional reciprocating stroke of the machine head, thus not extending the knitting time and ensuring that knitting efficiency is not affected.

[0065] The complete computer-controlled forced loop removal method for flat looms described in this embodiment innovatively fills the technological gap of traditional knitting without forced loop removal functionality. Through the combined control of the triangular actions corresponding to the left and right movements, the loops are forced to come off the loom a second time without unwinding, effectively solving the loop removal problem in flat looms and double-sided tight looms, and completely eliminating the failure of the head needle. The entire forced loop removal process is completed incidentally using the system's idle triangular system, without the need for additional mechanisms or reduction in equipment operating efficiency. The entire process is automatically predicted and actively intervened by the control system, without manual operation, truly and effectively ensuring the continuity of knitting and the quality of the finished fabric.

[0066] Example 2 A computerized horizontal loom forced loop-out control system is applied to the computerized horizontal loom forced loop-out control method of Embodiment 1, such as... Figure 2 As shown, the system includes: The weaving recognition module is used to acquire the pattern design file of the computer flat loom during the current weaving process, and to recognize the pattern design file to obtain the weaving recognition result of the current woven fabric. The loop-off trigger module is used to determine whether the knitting recognition result meets the forced loop-off trigger condition, and generate a forced loop-off trigger signal when the knitting recognition result meets the forced loop-off trigger condition; The unwinding control module is used to respond to the forced unwinding trigger signal, control the action of the idle triangle component in the computer braiding machine, and perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

[0067] In this embodiment, the pattern design file of the computerized flat loom during the current weaving process is obtained through the weaving recognition module, which provides a basis for subsequent recognition and loop removal judgment, and can predict in advance whether there is a risk of loop removal difficulty in the current weaving process; through the loop removal trigger module, the weaving recognition result is used to match the forced loop removal trigger conditions, which can accurately identify the scenario that requires forced loop removal, and trigger the loop removal control only when the conditions are met, without affecting the normal operation of the regular weaving process; through the loop removal control module, the existing idle triangular components of the equipment are controlled to complete the secondary pressing loop removal, without the need to add a special loop removal mechanism, without large-scale modification of the existing equipment, without increasing the equipment manufacturing cost and structural complexity, and without occupying additional equipment running time. It can achieve forced loop removal in a non-loop removal state without reducing the equipment operating efficiency, effectively solving the problem of head needle failure in the weaving process of special fabrics such as four-sided flat weave and double-sided tight weave, reducing fabric quality defects, reducing the risk of equipment damage, reducing manual intervention costs and downtime maintenance time, and improving production efficiency and yield.

[0068] The functions of each module in the computerized horizontal loom forced loop-out control system described in this embodiment are the same as the method steps of the computerized horizontal loom forced loop-out control method described in Embodiment 1. Therefore, for details not covered in this embodiment, please refer to Embodiment 1 and... Figure 1 The specific details will not be elaborated here.

[0069] Example 3 This embodiment provides a computerized flat knitting machine, such as Figure 3 As shown, it includes: Machine body; The main controller, located on the machine body, is used to acquire the pattern design file of the computer flat loom during the current weaving process, and to identify the pattern design file to obtain the weaving identification result of the current woven fabric; to determine whether the weaving identification result meets the forced loop-out trigger condition, and to generate a forced loop-out trigger signal when the weaving identification result meets the forced loop-out trigger condition; An empty triangular assembly is mounted on the machine body and electrically connected to the main controller. It is used to respond to the forced unwinding trigger signal and operate under the control of the main controller to perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

[0070] In this embodiment, the electrical connection between the main controller and the idle triangular component enables precise automatic control of the forced loop-off action. Loop-off optimization is achieved by relying on the original hardware structure of the machine body. There is no need to modify the main structure of the existing computerized flat loom. Only the control logic of the main controller needs to be updated through software upgrade to complete the functional upgrade of the equipment. The upgrade cost is low and the adaptation speed is fast, which enables existing equipment to quickly obtain the forced loop-off capability and solve the loop-off problem in the weaving of special fabrics.

[0071] Specifically, the main controller can be a microprocessor, microcontroller, or other device with data processing and control functions. These types of devices can all meet the requirements for pattern data reading, trigger judgment, and signal transmission. The appropriate model can be flexibly selected according to the computing power requirements and cost budget of the equipment; no specific restrictions are imposed here.

[0072] Similarly, for details not covered in this embodiment, please refer to Embodiment 1, Embodiment 2, and... Figures 1 to 2 The specific details will not be elaborated here.

[0073] Example 4 This embodiment also provides a computerized horizontal loom forced loop-out control device, including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed, it implements the method steps in the computerized horizontal loom forced loop-out control method of Embodiment 1.

[0074] By using a computer program stored in memory and running on a processor, precise and automatic control of forced unwinding can be achieved without the need for an additional dedicated unwinding mechanism, large-scale modifications to existing equipment, or additional equipment manufacturing costs and structural complexity. It also avoids taking up extra equipment operating time. It can achieve forced unwinding without reducing equipment operating efficiency, effectively solving the problem of head needle failure in the weaving process of special fabrics such as four-sided flat weave and double-sided tight weave, reducing fabric quality defects, reducing the risk of equipment damage, reducing manual intervention costs and downtime maintenance time, and improving production efficiency and yield.

[0075] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the computer device, connecting all parts of the computer device through various interfaces and lines.

[0076] Memory can be used to store computer programs and / or models. The processor performs various functions of the computer device by running or executing the computer programs and / or models stored in the memory, and by accessing data stored in the memory. Memory can primarily include a program storage area and a data storage area. The program storage area can store the operating system and at least one application program required for a function (e.g., sound playback, image playback, etc.); the data storage area can store data created based on the use of the mobile phone (e.g., audio data, video data, etc.). Furthermore, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMedia Cards (SMC), Secure Digital (SD) cards, Flash Cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0077] It should be understood that each block of a flowchart and / or block diagram, and combinations of blocks in a flowchart and / or block diagram, can be implemented by a computer program. These computer programs can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that instructions executable by the processor of the computer or other programmable data processing device generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0078] These computer programs may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0079] These computer programs may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0080] This embodiment also provides a computer storage medium, which includes at least one instruction that, when executed by a computer, implements the method steps of the computer-controlled forced loop-off control method for a horizontal loom in Embodiment 1.

[0081] By executing a computer storage medium containing at least one instruction, precise automatic control of forced unwinding can be achieved without the need for an additional dedicated unwinding mechanism, large-scale modification of existing equipment, or additional equipment manufacturing costs and structural complexity. It also avoids occupying additional equipment operating time and can achieve forced unwinding in a non-unwinding state without reducing equipment operating efficiency. This effectively solves the problem of head needle failure in the weaving process of special fabrics such as four-sided weave and double-sided tight weave, reduces fabric quality defects, lowers the risk of equipment damage, reduces manual intervention costs and downtime maintenance time, and improves production efficiency and yield.

[0082] Similarly, for details not covered in this embodiment, please refer to Embodiment 1, Embodiment 2, Embodiment 3, and... Figures 1 to 3 The specific details will not be elaborated here.

[0083] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for controlling forced loop separation on a computerized flat knitting machine, characterized in that, The method includes: Obtain the pattern design file of the computerized flat loom during the current weaving process, and identify the pattern design file to obtain the weaving identification result of the current woven fabric; Determine whether the knitting recognition result meets the forced loop-out trigger condition, and generate a forced loop-out trigger signal when the knitting recognition result meets the forced loop-out trigger condition; In response to the forced unwinding trigger signal, the idle triangular component in the computer braiding machine is controlled to operate, and the coil on the computer braiding machine is subjected to secondary pressure unwinding, so that the coil is forced unwinding without unwinding.

2. The computer-controlled horizontal loom forced loop-out control method according to claim 1, characterized in that, The empty triangle assembly includes at least a left-pin triangle, a right-pin triangle, a flip-pin triangle, and a hanging triangle.

3. The computer-controlled horizontal knitting machine forced loop-out control method according to claim 2, characterized in that, The weaving identification result includes the weaving process of the current woven fabric in each weaving row and the weaving direction corresponding to the weaving process; wherein, the weaving direction includes left-hand weaving and right-hand weaving; When the knitting direction is specifically left-hand knitting, in response to the forced loop release trigger signal, the idle cam assembly in the computerized knitting machine is controlled to perform a secondary compression loop release on the coils on the computerized knitting machine, so that the coils complete the forced loop release without unwinding, including: Control the left needle triangle to enter the working position to perform the pre-pressing needle action; Control the right connector triangle to exit the working position; The control triangle is brought into the working position to provide motion guidance only for the needles of the computerized knitting machine; Control the lifting triangle to exit the working position.

4. The computer-controlled horizontal knitting machine forced loop-out control method according to claim 2, characterized in that, The weaving identification result includes the weaving process and the corresponding weaving direction; wherein, the weaving direction includes left-hand weaving and right-hand weaving; When the knitting direction is specifically right-hand knitting, in response to the forced unwinding trigger signal, the idle cam assembly in the computerized knitting machine is controlled to perform a secondary compression unwinding of the coils on the computerized knitting machine, so that the coils complete forced unwinding without unwinding, including: Control the left connector triangle to exit the working position; Control the right pin triangle to enter the working position to perform the pre-pressing action; The control triangle is brought into the working position to provide motion guidance only for the needles of the computerized knitting machine; Control the lifting triangle to exit the working position.

5. The computer-controlled horizontal knitting machine forced loop-out control method according to claim 3 or 4, characterized in that, Before controlling the movement of the idle triangle component in the computerized knitting machine, the method further includes: In response to the forced loop release trigger signal, a left needle connection triangle control command, a right needle connection triangle control command, a needle flipping triangle control command, and a needle lifting triangle control command are generated respectively.

6. The computer-controlled horizontal loom forced loop-out control method according to claim 1, characterized in that, Determining whether the knitting recognition result meets the forced loop-off trigger condition includes: When the weaving identification result indicates that the current woven fabric belongs to the target structure type and is in the target process, it is determined that the weaving identification result meets the forced loop-out triggering condition; otherwise, it is determined that the weaving identification result does not meet the forced loop-out triggering condition.

7. The computer-controlled horizontal loom forced loop-out control method according to claim 6, characterized in that, The target weave type is specifically a four-sided weave and / or a double-sided tight weave; the target process is specifically a coiling process.

8. The computer-controlled horizontal loom forced loop-out control method according to claim 1, characterized in that, The weaving identification result includes the fabric structure type and weaving process of the current woven fabric in each weaving row; The pattern design file is identified to obtain the weaving identification result of the current woven fabric, including: The pattern design file is read and parsed to obtain the instruction sequence for each weaving row of the current woven fabric; Select the instruction sequence under any knitting row, and extract the organization feature vector of the corresponding knitting row based on the selected instruction sequence; The structure feature vector of the selected knitting row is matched with the preset structure type template library to obtain the corresponding fabric structure type. Based on the instruction sequence of the selected weaving row, the corresponding triangular action timing combination is obtained through parsing. The triangular motion sequence combination of the selected weaving row is identified to generate the corresponding weaving process; Traverse the instruction sequence of each weaving row of the current woven fabric, and obtain the fabric structure type and weaving process for each weaving row in the same way.

9. A computer-controlled forced loop-out control system for a flat knitting machine, characterized in that, The system, applied in any one of claims 1 to 8, comprises: The weaving recognition module is used to acquire the pattern design file of the computer flat loom during the current weaving process, and to recognize the pattern design file to obtain the weaving recognition result of the current woven fabric. The loop-off trigger module is used to determine whether the knitting recognition result meets the forced loop-off trigger condition, and generate a forced loop-off trigger signal when the knitting recognition result meets the forced loop-off trigger condition; The unwinding control module is used to respond to the forced unwinding trigger signal, control the action of the idle triangle component in the computer braiding machine, and perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

10. A computerized flat knitting machine, characterized in that, include: Machine body; The main controller, located on the machine body, is used to acquire the pattern design file of the computer flat loom during the current weaving process, and to identify the pattern design file to obtain the weaving identification result of the current woven fabric; to determine whether the weaving identification result meets the forced loop-out trigger condition, and to generate a forced loop-out trigger signal when the weaving identification result meets the forced loop-out trigger condition; An empty triangular assembly is mounted on the machine body and electrically connected to the main controller. It is used to respond to the forced unwinding trigger signal and operate under the control of the main controller to perform secondary pressure unwinding on the coil on the computer braiding machine, so that the coil completes forced unwinding without unwinding.

11. A computer-controlled horizontal knitting machine with forced loop-out control device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed, implements the method steps of the computer-controlled forced loop-off control method for a horizontal loom as described in any one of claims 1 to 8.

12. A computer storage medium, characterized in that, The computer storage medium includes at least one instruction that, when executed by a computer, implements the method steps of the computer-controlled forced loop-off control method for a horizontal loom as described in any one of claims 1 to 8.

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